【摘要】 利用紫外辐照法在聚乙烯(PE)锂离子电池隔膜表面接枝上丙烯酸甲酯(MA)以改善隔膜的润湿性,研究了引发剂浓度、单体浓度和辐照时间对接枝率的影响,通过红外光谱、SEM观察和接触角测定等手段进行了表征分析。在纯MA单体溶液中,引发剂二苯甲酮(BP)浓度为0.02g/mL,辐照90s接枝率达到68.9%,接触角从原膜的46°降低到12°。更多还原

【Abstract】 The ultraviolet irradiation method was used to graft methyl acrylate(MA) to Li-ion battery separator.It was found that the degree of grafting(DG) was influenced by initiator concentration,monomer concentration and irradiation time.The MA-graft-separator was analyzed by FT-IR,SEM and contact angle testing.With BP concentration of 0.02g/mL,pure MA monomer solution and irradiation time of 90s,DG was 68.9%,and the wetting ability improved obviously with the contact angle reduced to 12°from 46°.更多还原